LAS码的设计及其相关性分析  

S tudy on the design and correlation characteristic of LA S code

作　　者：朱先伟[1] 何宏[1] 张大建[2] 孟晖[2] 汤璐[1] 

机构地区：[1]天津理工大学电子信息与通信工程学院,天津300191 [2]天津市计量技术研究所,天津300192

出　　处：《天津理工大学学报》2006年第5期25-27,共3页Journal of Tianjin University of Technology

基　　金：天津市科技发展计划项目(05YFSYSF033)

摘　　要：主要对LA、LS和LAS码的设计进行理论阐述,并对其相关函数进行M atlab仿真,仿真结果显示,LAS码有着“零干扰窗”的优良特性,在该窗口内,自相关函数为一脉冲峰值,而互相关函数为零.这将有助于减少码间干扰、多用户干扰和接入干扰等,从而揭示了LAS码的优越性能.The paper mainly studies the designs of LA, LS and LAS codes. Then it makes matlab simulation for their auto- correlation functions and cross-correlation functions. Simulation and analysis show that, LAS code has zero cross-correlation in the ＂Zero Interference Window＂, and has only an impulse auto-correlation, and these excellent features help to eliminate ACI, MAI and ISI. So it has more large potential than traditional codes.

关 键 词：LA码 LS码 LAS码 自相关函数 互相关函数 

分 类 号：TN929.5[电子电信—通信与信息系统]